模型预测控制实现逆变器电压穿越研究  

Model Predictive Current Control of Inverters to Meet Low-voltage Ride-through Requirements

作　　者：叶海峰[1] 陈存林[1] 李顺 丁超[1] 麦立 栾喜臣 YE Hai-feng;CHEN Cun-lin;LI Shun;DING Chao;MAI Li;LUAN Xi-chen(State Grid Anhui Electric Power Company, Hefei 230000, Chin)

机构地区：[1]国网安徽省电力公司电力调度控制中心

出　　处：《控制工程》2018年第5期795-798,共4页Control Engineering of China

摘　　要：风力发电系统的功率容量和渗透率得到快速增长。当出现电网电压跌落情况,风力发电系统需要满足低电压穿越要求,而且需要帮助整个系统保持电压和频率稳定。和其他算法相比,模型预测控制具有快速的动态响应和参考跟踪性能,而且工作开关频率较低。为了满足低电压穿越要求,将模型预测控制应用到风力发电系统的并网控制器中。仿真结果验证了所提出算法能够快速的跟踪给定电流。The installed power capacity and penetration of wind power generation has been significantly growing. The low-voltage ride through（LVRT） requirement demands the wind power generation to remain connected to the grid in the presence of grid voltage dips, actively helping the network overall control to keep the network voltage and frequency stable. Predictive current control presents similar dynamic response and reference tracking than other well-established control methods, but works at lower switching frequencies. In this paper, the predictive current control is applied to the grid-side converter as part of a wind energy conversion system, in order to fulfill the LVRT requirements. Simulation results confirm the validity of the proposed control approach.

关 键 词：低电压穿越 预测控制 无功支持 

分 类 号：TM464[电气工程—电器]